std::money_put

Defined in header `<locale>`
template< class CharT, class OutputIt = std::ostreambuf_iterator<CharT> > class money_put;

Class std::money_put encapsulates the rules for formatting monetary values as strings. The standard I/O manipulator std::put_money uses the std::money_put facet of the I/O stream's locale.

Inheritance diagram

If a std::money_put specialization is not guaranteed to be provided by the standard library (see below), the behaviors of its put() and do_put() are not guaranteed as specified.

Specializations

The standard library is guaranteed to provide the following specializations (they are required to be implemented by any locale object):

Defined in header `<locale>`
std::money_put<char>	creates narrow string representations of monetary values
std::money_put<wchar_t>	creates wide string representations of monetary values

In addition, the standard library is also guaranteed to provide every specialization that satisfies the following type requirements:

CharT is one of
- char,
- wchar_t, and
- any other implementation-defined character container type that meets the requirements for a character on which any of the iostream components can be instantiated; and
OutputIt must meet the requirements of LegacyOutputIterator.

Member types

Member type	Definition
`char_type`	`CharT`
`string_type`	std::basic_string<CharT>
`iter_type`	`OutputIt`

Member functions

(constructor)	constructs a new `money_put` facet (public member function)
put	invokes `do_put` (public member function)

Protected member functions

(destructor)	destructs a `money_put` facet (protected member function)
do_put [virtual]	formats a monetary value and writes to output stream (virtual protected member function)

Member objects

static std::locale::id id

id of the locale
(public member object)

Example

Run this code

#include <iomanip>
#include <iostream>
#include <iterator>
#include <locale>
 
int main()
{
    // using the I/O manipulator
    std::cout.imbue(std::locale("en_US.UTF-8"));
    std::cout << "American locale: "
              << std::showbase << std::put_money(12345678.9) << '\n';
 
    // using the facet directly
    std::cout.imbue(std::locale("de_DE.UTF-8"));
    std::cout << "German locale: ";
    auto& f = std::use_facet<std::money_put<char>>(std::cout.getloc());
    f.put({std::cout}, false, std::cout, std::cout.fill(), 12345678.9);
    std::cout << '\n';
}

Output:

American locale: $123,456.79
German locale: 123.456,79 €

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 427	C++98	`money_put` was guaranteed to accept any `CharT` that meets the requirements for a character on which any of the iostream components can be instantiated	only guarantees to accept char, wchar_t and other implementation- defined character types
LWG 2392	C++98	only character type `CharT` could be guaranteed to be accepted by `money_put`	can guarantee to accept implementation- defined character container types

Compiler support
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Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Metaprogramming library (C++11)
Diagnostics library
General utilities library
Strings library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Numerics library
Localizations library
Input/output library
Filesystem library (C++17)
Regular expressions library (C++11)
Concurrency support library (C++11)
Execution support library (C++26)
Technical specifications
Symbols index
External libraries

Character conversions
toupper
tolower
String and stream conversions
wstring_convert (C++11/17/26*)
wbuffer_convert (C++11/17/26*)

Member functions
money_put::money_put
money_put::~money_put
money_put::putmoney_put::do_put

moneypunct	defines monetary formatting parameters used by std::money_get and std::money_put (class template)
money_get	parses and constructs a monetary value from an input character sequence (class template)
put_money (C++11)	formats and outputs a monetary value (function template)